MIPI_AdvancedC_FRTK/Lect8/57_calcIntegralSquare.c
2024-11-14 08:45:50 +03:00

35 lines
562 B
C

#include <stdio.h>
#include <math.h>
typedef float(*function)(float);
//(-2, -1.5) (-1.5, -1) (-1, -0.5) (-0.5, 0)
float f(float x) {
return 8*x*x*x*x + 32*x*x*x + 40*x*x + 16*x + 1;
}
float testf(float x){
return 2;
}
float calcIntegralSquare(float xl, float xr, size_t n, function f) {
float sum = 0;
float h = (xr-xl)/n;
for(size_t i=0; i<n; i++) {
sum += f(xl);
xl += h;
}
return sum*h;
}
int main()
{
printf("calcIntegralSquare integral %f\n", calcIntegralSquare(0,2,1000,testf));
return 0;
}